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Finding the Fourth Proportional to 19,604.04, 29,406 and 7,917.12

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Solution

The fourth proportional to 19,604.04, 29,406 and 7,917.12 is: 11,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,604.04 : 29,406 = 7,917.12 : x
  2. Step 2: Convert to fraction form
    19,604.04/29,406 = 7,917.12/x
  3. Step 3: Cross multiply
    19,604.04x = 29,406 × 7,917.12
  4. Step 4: Simplify right side
    19,604.04x = 232,810,830.72
  5. Step 5: Solve for x
    x = 232,810,830.72/19,604.04
  6. Step 6: Final answer
    x = 11,875.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.